METEOROLOGICAL OBSERVATIONS ON BEN NEVIS. 



219 



Mcteorolor/ical Observations on Ben Nevis. — Report of the Committee, 

 consisting of Lord McLaren, Professor A. Crum Brown (Secre- 

 tarij). Dr. John Murray, Dr. Alexander Buchan, and Professor 

 K. OorELAND. (Draicn up by Dr. Bl'CHAn.) 



The Committee was appointed, as in former years, for the purpose of 

 co-operating with the Scottish Meteorological Society in making meteoro- 

 logical observations at the two Ben Nevis Observatories. 



The hourly eye observations by night as well as by day have been made 

 with the utmost regularity by Mr. Angus Rankin, the Acting Superin- 

 tendent, and the assistants during the year. The continuous registrations 

 and other observations have been carried on at the Low Level Observatory 

 at Fort "William with the same accuracy and fulness of detail as heretofore. 



The Directors of the Observatories tender their best thanks to Messrs. 

 A. J. Herbertson, T. S. Muir, A. Drysdale, M.A., B.Sc, P. S. Hardie, 

 George Ednie, and John S. Begg, for the invaluable assistance rendered 

 by them as volunteer observers during the summer and autumn months, 

 thus giving much needed relief to the members of the regular observing 

 staff. 



Table I. shows for the year 1896 the mean monthly and extreme 

 pressures and temperatures ; amounts of rainfall, with the days of rain, 

 and the number of days when the amount exceeded one inch ; the hours of 

 sunshine ; the mean percentage of cloud ; the mean velocity of the wind in 

 miles per hour at the top of the mountain ; and the mean rainband at both 

 observatories. The mean barometric pressures at Fort William Observa- 

 tory are reduced to 32° and sea level, but those at the Ben Nevis 

 Observatory are reduced to 32° only. 



Table I. 



1896 JaD. Feb. March April May | June July | Aug. Sept. Oct. 



Kov. Dec. Year 



Mean Pressure in Inches. 



Ben Nevis Ob- 

 servatory 

 Fort William 

 Differences , 



25-534I 25-5071 25-021 



30-17!)! 30-140J 29-597 

 4'645l 4-U3 



25-4431 25-711 

 30-045 30-266 



25-410 



29-890 

 4-480 



25-459 



29-958 

 4-499 



25-460 25-1721 25-127 



4-570 4-6021 4-565 



Mean Temperatures 



29-974 

 4-514 



29-646 

 4-474: 



29-704 

 4-577 



25-488 



30-092 

 4-604 



25-077 



29-661 



4-584 



25-367 



29-929 

 4-562 



32-4 



47-8 

 15-4 



61-3 



78-6 

 17-3 



14-2 



22-6 

 8-4 



